Grinding-mill



J. WANEK.

GRINDNG MILL.

I RPPUCATIUN.FILED JULY 27. i920- 1,365,574. Patented Jan. 11,1921.

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- GRINDING MILL.

APPLICATION FILED JULY 27. 1920.

1,365,574. Patented Jan. 11, 1921.

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J. WANEK. GRINDING MILL. APPLICATION FILED JULY 27:- 1920.

. Patented Jan. 11,1921.-

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Swim/L01, 7/, .W Q11 all UNITED STATES 1 -JOZEF WANEK, OF WESTFIELD, MASSACHUSETTS.

GRINDING-MILL.

Application filed July 27,

To all whom. it may 1 concern:

Be it known that I, J oznr WANEK, a citizen of Poland, residing-at VVestfielchin the county of Hampden and State of Massachusetts, have invented certain new and use ful Improvements in Grinding-Mills, of which the following is a specification.

This invention relates to certain new and useful improvements in grinding mills and has particular reference to a mill of the type adapted for milling flour as in the grinding of wheat'or other grains upon a small scale. A further object of the invention resides in the provision of'a grinding mill wherein the two opposed grinding disk faces are formed of stone and metah'better to obtain a milling action for the grains passing between the same.

The invention further contemplates as an improvement over the prior art, a novel type of adjusting means forone of the grinding disks to vary the distance between the same whereby the degree of pulverization of the grains isunder control of the operator.

With the above and other objects in View, the invention consists in the novel form, combination and arrangement of parts hereinafter more fully described in connection with the accompanying drawings and in which like reference characters indicate similar parts throughout the several views.

In the drawings, I

Figure 1 is a side elevational view of a grinding mill constructed in accordance with the present invention, showing the engaging pin wheels between the power shaft and millstone shaft,

Fig. 2 is a vertical sectional view taken on line Il-II of Fig. 1 showing the sliding clutch for locking the driving wheel to the shaft supporting the same,

Fig. 3 is a vertical sectional view taken on line III-III of Fig. 1 showing the screw rod for vertically shifting the grinding stone,

Fig. 4: is a top plan view of the device showing the lateral outlet for the grinding material, and

Fig. 5 is a horizontal sectional view taken on line V-V of Fig. 1 showing the pivotally mounted rectangular frame for supporting the grinding stone.

Referring more in detail to the accompanying drawings, there is illustrated a grinding mill comprising a supporting Specification of Letters Patent.

. Patented Jan. 11, .1921.

1920. Serial No. 399,239.

framework embodying corner posts 1 connected byrlongitudinal side bars 2 and transverse end bars 3hinged adjacent the lower ends thereof, the upper ends of the legs being connected by a table top 4 with the ends of the legs mortised therein as shown in Figs. 1 andA. As shown in Figs. 1 and 3, the lower ends of the legs at one-side of the frame are socketed for the reception of apertured height adjusting feet-lretained in adjusted position by the pins 1".

The power mechanism associatedjwith the supporting frame embodies end cross'bars 5 in which is 'journaleda longitudinal shaft 6 having upon one end thereof a balanced fiy-wheel 7 and at its other end a loose pu1- ley 8 and a fixed power pulley 9. A sleeve 10 is splined on the shaft 6 intermediate the end bars 5 and carries a pin wheel 11 upon one end thereof, the other end being .provided with an annularly grooved flange 12 into which the forked end 13 of a shifting lever 14: extends, the lever 14 being pivoted upon the bracket 15 carried by the adjacent corner post 1 while the outer end of the'lever is selectively positioned in notches I formed in the end of the arcuate arm '16 projecting from the same corner post so that thesleeve 10 and pin wheel 11 are retained in their ad justed positions.

The construction of the table top 4 ismore clearly shown in Figs. 3 and 1 having a central depression or opening 17 provided in the upper face thereof with a lateral declined outlet 18 communicating with the chute 19. A transverse cleat 20 is mounted on the table top 4 at each side of the central opening 17 and constitutes a guide for the lower ends 21 of the upwardly tapering hopper supporting frame 22, the rectangular support 23 at the upper end of the frame 22 facilitating the positioning of the tapered hopper 24 with the lower reduced end thereof spaced from and axially of the table top opening 17 while a sliding gate 25 controls the lower outlet end of the hopper 24.

The grinding mechanism includes a metal disk 26 having a substantially frictional peripheral engagement with the wall of the socket 17 as shown in Fig. 3 with an axial opening therein for receiving a bearing bushing 27. A longitudinal bar 28 lies beneath the table top 4: and is connected thereto by the end blocks 29, the bar 28 being centrally apertured to provide a clearance space for the vertical shaft 30 extending through an opening 31 in the table top 4 and slidably journaled in the disk bushing 27. The upper end of the shaft 30 carries a rectangular projection 32 received in a similarly shaped opening in the cross strip 33 countersunk in the lower face of the grindstone 34 and spanning the central opening 35 as shown in Fig. 4.

To vary the distance between the grindstone 34 and the metal disk 26, the lower end of the shaft 30 is rotatably supported in a rectangular frame embodying end bars 36 having front and rear connecting bars 37 and 38 respectively with corner pivoting lugs 39 carried by the rear ends of the side bars 36 and pivoted upon the bolts 40 in the corner posts 1. A central transverse connecting bar 41 extends between the front and rear connecting bars 37 and 38 and has an enlarged intermediate portion 42 having an opening 43 through which the shaft 30 extends, the shaft being provided with a washer 44 fixed thereto above the bar 41 to support the shaft 30. The end of the shaft projecting through the bar 41 carries a pin wheel 45, the pins of which are adapted for engagement with the pins of the wheel 11 as shown in Fig. 1. The support for the forward side of the shaft supporting frame includes a screw 46 threaded through the double extension 47 and operated by the handle 48, the lower end of the screw 46 having a ball head 49 swiveled in a clownwardly opening socket in the forward bar 37 of the shaft supporting frame.

The material to be ground is fed into the hopper 24 and the passage therefrom is controlled by the sliding gate valve 25 at the lower end thereof and delivered into the central opening 35 of the stone 34.

The grain or other material to be ground or pulverized passes between the grindstone 34 and the metal disk 26, the opposed faces of which are roughened, corrugated,

or otherwise disfigured as at 50 with the gagement and disengagement of said pin wheels. The distance between the grinding disks is under control of the operator, and is varied by the screw 46 threaded through the table extension 47 to shift the frame supporting the shaft 30 upon the pivoting lugs 39, while the angularity of the main supporting frame may be regulated by the shiftable feet 1'.

Vfhile there is herein shown and described the preferred embodiment of the invention.

it is nevertheless to be understood that minor changes may be made therein without departing from the spirit and scope of the invention as claimed.

W hat is claimed as new is:

A grindin mill of the type described comprising a supporting frame, a metal disk mounted thereon, a shaft journaled through said metal disk, a grindstone supported on the upper end of said shaft, supporting means for the lower end of said shaft, a pin wheel fixed to the lower end of said shaft, a longitudinal power shaft journaled in said frame, a pin wheel slidable on said shaft, means for sliding the pin wheel on the longitudinal power shaft to contro -ngagement thereof with the pin wheel on the grindstone supporting shaft, the supporting means for the lower end of the grindstone carrying shaft including a rectangular frame pivoted at one side to the base supporting frame and screw adjusting means for the other side thereof.

In testimony whereof I afiix my signature.

J OZEF WAN EK. 

